With Patek Philippe Extract from the Archives confirming production of the present watch in 1961 and its subsequent sale on July 13 of the following year.
To the best of our knowledge the present watch has never before been offered in public.
This watch has never been offered at auction before and is one of only six examples of reference 3419 with anti-magnetic calibre to appear in public to date.
This unusual model was designed to allow the easy change of the leather bracelet against a metal version by unscrewing a metal ring fixed onto the case back and revealing the lugs, hence its name "convertible".
Reference 3419 was introduced into the market in 1960, the same year as the anti-magnetic calibre 27-AM 400, an improved version of the 1958 calibre 12 400.